People who know still repeat it, so that's only a part of the equation.

The curse of knowing history repeat itself is that you can't change the destiny of the zeitgeist. Cassandra witnessed the fall of her loved ones, and they refused to hear the gift Apollo gave her. Tis why, if I tossed you a chip with Cassandra crying, you knew why my admonishments went unanswered.

We are helpless against the cyclical nature of the universe. Knee-chee knew.